Comprehensive Package Contents: the 905-212 bonnet and poppet repair kit includes essential components like the bonnet, O-ring, spring, E-ring, washer, stem, rubber disc, and poppet; Accompanied by a canopy and lubricant, this kit ensures you have most necessary for a thorough repair; Its compatibility with 1inch and 1-1/4inch model 765 pressure vacuum breakers and backflow preventers adds to its versatility; It's crucial to confirm your model before purchase Reliable Materials: crafted from sturdy materials, this kit offers and reliability; Components made from plastic provide a yet sturdy structure, while the canopy, constructed from aluminum alloy, offers stable performance over extended use; The entire set promises professional-level reliability and multiple-use cycles, ensuring that you 't need frequent replacements Effortless Installation Process: designed with convenience in mind, the 905-212 repair kit allows for easy installation without the need for special tools; Simply close the valve, open the test valve to release pressure, and replace faulty parts by hand; The included lubricant facilitates smooth installation, ensuring a fit, but remember not to overtighten; This simplicity makes maintaining your system hassle-free, even for non-professionals Reliable Functionality: this repair kit efficiently stops leaks and safeguards your water supply system from contamination; Precision machining ensures a tight seal, maintaining system safety and performance; By preventing contaminated water from entering clean water supplies, it provides peace of mind that your system remains hygienic; It also offers long-term reliability, making it a solution for enhancing system safety Tailored Compatibility: specifically engineered for 765 series backflow preventers, this kit fits 1inch and 1-1/4inch Model 765 pressure vacuum breakers; By ensuring precise compatibility, it effectively reduces leaks, enhanc